import  time
scale=100
print("{0:=^113}".format("start"))
start=time.perf_counter()
for i in range(scale+1):
    a='-'*i
    b='.'*(scale-i)
    c=(i/scale)*100
    dur=time.perf_counter()-start
    print("\r{:^3.0f}%[{}->{}]{:.2f}s".format(c,a,b,dur),end='')
    time.sleep(0.05)
print("\n{0:=^113}".format("end"))